@inproceedings{MissagiaGuerreroNarraetal., author = {Missagia, Bruna and Guerrero, Cinthya and Narra, Satyanarayana and Krautz, Hans Joachim and Ay, Peter}, title = {Physical characterization of Brazilian agricultural and forestry residues aiming the production of energy pellets}, language = {en} } @misc{MissagiaGuerreroNarraetal., author = {Missagia, Bruna and Guerrero, Cinthya and Narra, Satyanarayana and Sun, Yaoming and Ay, Peter and Krautz, Hans Joachim}, title = {Physicomechanical properties of rice husk pellets for energy generation}, language = {en} } @misc{NarraBhandariGlaseretal., author = {Narra, Satyanarayana and Bhandari, Prem and Glaser, C. and Bischof, Heike and Busch, G{\"u}nter}, title = {Pelletisation of Biogas Residues with Pelleting Discs}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-55-4}, pages = {1937}, language = {en} } @misc{NarraAyGlaser, author = {Narra, Satyanarayana and Ay, Peter and Glaser, Claudia}, title = {Vorrichtung und Verfahren zur Agglomeration der Ablauge eines Cellulosegewinnungsprozesses}, language = {de} } @misc{NarraAy, author = {Narra, Satyanarayana and Ay, Peter}, title = {Verfahren zur Herstellung von s{\"a}urebest{\"a}ndigen Biopolymer-Lignin-Membranen}, language = {de} } @misc{NarraAyGlaseretal., author = {Narra, Satyanarayana and Ay, Peter and Glaser, Claudia and Logsch, Florian}, title = {Verfahren zur Herstellung von wasserunl{\"o}slichen Lignin-Agglomeraten}, language = {de} } @misc{OyegbileNarra, author = {Oyegbile, Benjamin and Narra, Satyanarayana}, title = {The roles of emerging environmental contaminants in future impact assessments of wastewater treatment plants in Europe}, series = {Journal of the Polish Mineral Engineering Society}, journal = {Journal of the Polish Mineral Engineering Society}, number = {2}, issn = {1640-4920}, pages = {85 -- 90}, language = {en} } @misc{OyegbileNarra, author = {Oyegbile, Benjamin and Narra, Satyanarayana}, title = {Impending natural gas supply glut and biogas developments in Europe: Economic and environmental implications}, series = {Journal of Environment and Earth Science}, volume = {2}, journal = {Journal of Environment and Earth Science}, number = {11}, issn = {2224-3216}, pages = {1 -- 7}, language = {en} } @inproceedings{NarraBrinkerAy, author = {Narra, Satyanarayana and Brinker, Mona and Ay, Peter}, title = {Particle size distribution of communited and liberated cereal straws measured with different image analysis systems and their characteristic influence on mechanical pellets quality}, series = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012}, booktitle = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012}, publisher = {New Delhi}, isbn = {81-901714-3-7}, language = {en} } @inproceedings{NarraDasguptaAyetal., author = {Narra, Satyanarayana and Dasgupta, Sunanda and Ay, Peter and Zeng, T. and Weller, N.}, title = {Pelletisation of Rye- and Wheat straw with additives}, series = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, booktitle = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-55-7}, language = {en} } @inproceedings{NarraGlaserAy, author = {Narra, Satyanarayana and Glaser, Claudia and Ay, Peter}, title = {Abrasion and strength of biomass pellets as main mechanical stability characteristics}, series = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, booktitle = {19th European Biomass Conference and Exhibition, proceedings, ICC Berlin International Congress Center Berlin, Germany, conference 6 - 10 June 2011}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-55-7}, language = {en} } @inproceedings{KarthikeyanAyNarra, author = {Karthikeyan, J. and Ay, Peter and Narra, Satyanarayana}, title = {Energy Production from Agricultural residues and Crop processing Wastes: Some Problems and Perspectives}, series = {International Conference on Green Power Generation: Vision 2020}, booktitle = {International Conference on Green Power Generation: Vision 2020}, doi = {10.13140/2.1.3330.8965}, pages = {9}, language = {en} } @inproceedings{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Ay, Peter}, title = {Comparison of grinding and liberation processes for stalky biomass materials as a prerequisite for production of energy pellets with high calorific value}, series = {XXV International Mineral Processing Congress, IMPC 2010, "Smarter processing for the future", Brisbane, Australia 6-10 September 2010, congress proceedings}, booktitle = {XXV International Mineral Processing Congress, IMPC 2010, "Smarter processing for the future", Brisbane, Australia 6-10 September 2010, congress proceedings}, publisher = {AusIMM}, address = {Carlton South, Australia}, isbn = {978-1-921522-28-4}, language = {en} } @inproceedings{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Ay, Peter}, title = {Pelletisation of cereal straws as a source of energy after specific communition processes}, series = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, booktitle = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-56-5}, language = {en} } @inproceedings{JurischkaPedaNarraetal., author = {Jurischka, Constantin and Peda, S. and Narra, Satyanarayana and Smieszek, Marlene and Stollberg, Christian and Ay, Peter and Kay, M.}, title = {Innovative technologies for production of highly pure substances and bio fine chemicals from plants}, series = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, booktitle = {18th European Biomass Conference and Exhibition, proceedings of the international conference held in Lyon, France, 3 - 7 May 2010}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, isbn = {978-88-89407-56-5}, language = {en} } @inproceedings{MarkowskiNarraAyetal., author = {Markowski, Jens and Narra, Satyanarayana and Ay, Peter and Pempel, Harry and M{\"u}ller, Mike}, title = {Automatic disassembly and recycling of lithium-traction-accumulators}, series = {Proceedings, XXVII. IMPC, Santiago de Chile, 2014}, booktitle = {Proceedings, XXVII. IMPC, Santiago de Chile, 2014}, publisher = {GECAMIN}, address = {Santiago de Chile}, pages = {227 -- 236}, abstract = {Within the next few years major changes in mobility are expected. Increasing numbers of electric powered cars, electrobikes and E-Scooters define the transport sector. Recently lithium based traction batteries as storage medium have led into matrurity of series production combining high electrical efficiencies with low weights and compact dimensions. Due to the relatively young development with lithium batteries utilization, only few investigation were conducted regarding their recycling. Conventional battery recycling processes can not be applied due to differences in design and chemistry. So an automated disassembly and processing procedure for lithium traction batteries has been developed in the R/D-project "Li-WERT". Instead of complete smelting of the batteries without pretreatment, an automated disassembly and specific treatment of the material streams was realised, adjusted to the needs of the subsequent recovery technologies. A higher quality, with reduced expenses for the separation of fine-grained or fused material mixes, can be obtained for the individual components. The automated disassembly using an industrial robot significantly reduces dangers for the operating crew. The selective disassembly and beneficiation allows full recovery of the fractions. The batteries will be disassembled to cell level by the industrial robot. Anodes, cathodes, and separation layers are isolated and processed. The technology is designed, that no waste is generated for disposal. The pelletised cathode coating and the other separated metals (stainless steel, copper, aluminum) can be used in respective metallurgical plants. Circuit boards and plug contacts are also coveted secondary raw materials for reuse. The process is modular and offers high flexibility, e. g. for new battery types/ sizes by quick adjustment of the robot and tool change. Adaptation to other cathode materials (e. g. Li[FePO]) is possible. After finishing the R/D-project, a pilot plant for demontage was realised in 2013.}, language = {en} } @inproceedings{MarkowskiNarraAyetal., author = {Markowski, Jens and Narra, Satyanarayana and Ay, Peter and Hein, Christian and Weber, Alfred}, title = {Production of agglomerates from iron-containing fines from the ASR-recycling processes for its use in blast furnaces}, series = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012, vol. 1}, booktitle = {XXVI International Mineral Processing Congress - IMPC 2012 : New Delhi, India, September 24 - 28, 2012, vol. 1}, address = {New Delhi}, isbn = {81-901714-3-7}, abstract = {The EU Directive 2000/53/EC on end-of life vehicles (ELVs) states that in 2015 at least 85 wt.-\% of a vehicle has to be reused or recycled. This result in the obligatory need to separate additionally metallic and other components of the automotive shredder residues (ASR), so that they can be professionally prepared for recycling and reuse further. Currently the iron-containing fines of ASR are deposited as it is not possible to process in blast furnaces due to its particle size (< 4 mm), composition and material properties. Additionally problems are also caused in handling and transportation (dust) of the material. This work focuses mainly on the ASR materials utilization in blast furnaces. Material was further separated into two consecutive fractions by carrying out repeated crushing and magnetic separation twice. The two fractions have significantly higher iron content (up to 75 wt.-\%) compared to the initial material mixture. The materials were assessed for their usage in blast furnaces based on the possible pelletisation with and without binders, stability of pellets, shape and size of pellets, etc. Pelletisation of the material was carried out with a single mould pellet press. Further lignite coal was added to the mixture as additive which improved the pelletisation behavior and the mechanical stability of pellets. Lignite coal was chosen as reducing agent in the blast furnace process contributing towards additional savings in energy supplied. The experiments reveal that the production of pellets from iron-containing fines is possible with a lignite coal admixture of about 15 wt.-\%. These pellets displayed good mechanical stability and can be used in blast furnace processes in recovery of the recyclable metals which are currently not recycled. The recycling of not yet recyclable metals would reduce the deposition and can be easily adopted into the economic cycle by their utilization.}, language = {en} } @misc{NarraTaoGlaseretal., author = {Narra, Satyanarayana and Tao, Yonggui and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Ay, Peter}, title = {Increasing the calorific value of Rye straw pellets with biogenous and fossil additives}, series = {Energy and Fuels}, volume = {24}, journal = {Energy and Fuels}, number = {9}, issn = {0887-0624}, pages = {5228 -- 5234}, language = {en} } @misc{Narra, author = {Narra, Satyanarayana}, title = {Structural development of clay soil with the amendment of coal combustion by-product FGD gypsum in Lusatia Germany}, series = {International Journal of Soil Science}, volume = {5}, journal = {International Journal of Soil Science}, number = {2}, issn = {1816-4978}, pages = {62 -- 72}, language = {en} } @misc{Narra, author = {Narra, Satyanarayana}, title = {Modeling water-induced compaction of the Saalian glacial till in lower Lusatia}, series = {International Journal of Soil Science}, volume = {5}, journal = {International Journal of Soil Science}, number = {1}, issn = {1816-4978}, pages = {26 -- 33}, language = {en} } @misc{Narra, author = {Narra, Satyanarayana}, title = {Flue Gas Desulphurization Gypsum as a Soil Amendment in the Growth of Wild Rye and Poplar (Hybrid 275 and Weser 6) Clones in Lusatia, Germany}, series = {International Journal of Agricultural Research}, volume = {4}, journal = {International Journal of Agricultural Research}, number = {10}, pages = {297 -- 309}, language = {en} } @misc{Narra, author = {Narra, Satyanarayana}, title = {Influence of compaction curve modeling on void ratio and pre-consolidation stress}, series = {International Journal of Soil Science}, volume = {4}, journal = {International Journal of Soil Science}, number = {2}, issn = {1816-4978}, pages = {57 -- 66}, language = {en} } @techreport{NarraAyMarkowskietal., author = {Narra, Satyanarayana and Ay, Peter and Markowski, Jens and Glaser, Claudia}, title = {Grundlagenuntersuchungen: Innovative Makroverkapselung von G{\"a}rresten}, publisher = {BTU, LS Aufbereitungstechnik}, address = {Cottbus}, pages = {56}, language = {de} } @incollection{NarraLogschGlaseretal., author = {Narra, Satyanarayana and Logsch, Florian and Glaser, Claudia and Ay, Peter and D{\"o}hling, Frank and Leistner, Diana and Strube, Dieter}, title = {LignoBioFuel : Entwicklung eines Verfahrens zur Herstellung von stofflich und energetisch nutzbaren Bioagglomeraten auf der Basis von Lignin}, series = {Effizient, umweltvertr{\"a}glich, dezentral - neue Konzepte f{\"u}r die Nutzung von biogenen Festbrennstoffen, Bd. 2}, booktitle = {Effizient, umweltvertr{\"a}glich, dezentral - neue Konzepte f{\"u}r die Nutzung von biogenen Festbrennstoffen, Bd. 2}, editor = {Thr{\"a}n, Daniela and Pfeiffer, Diana}, publisher = {DBFZ, Dt. Biomasseforschungszentrum}, address = {Leipzig}, pages = {85 -- 99}, language = {de} } @incollection{NarraLogschGlaseretal., author = {Narra, Satyanarayana and Logsch, Florian and Glaser, Claudia and Ay, Peter}, title = {Erzeugung von Bioagglomeraten auf der Basis ligninhaltiger Ablaugen der Papier- und Zellstoffindustrie}, series = {Effizient, umweltvertr{\"a}glich, dezentral - neue Konzepte f{\"u}r die Nutzung von biogenen Festbrennstoffen, Bd. 2}, booktitle = {Effizient, umweltvertr{\"a}glich, dezentral - neue Konzepte f{\"u}r die Nutzung von biogenen Festbrennstoffen, Bd. 2}, editor = {Thr{\"a}n, Daniela and Pfeiffer, Diana}, publisher = {DBFZ, Dt. Biomasseforschungszentrum}, address = {Leipzig}, pages = {247 -- 264}, language = {de} } @techreport{NarraAy, author = {Narra, Satyanarayana and Ay, Peter}, title = {LignoBioFuel : Entwicklung eines Verfahrens zur Herstellung von stofflich und energetisch nutzbaren Bioagglomeraten auf der Basis von Lignin : Endbericht - Zeitraum 01.07.2011 bis 28.02.2014}, publisher = {BTU, Lehrstuhl Aufbereitungstechnik}, address = {Cottbus}, doi = {10.13140/RG.2.1.3617.7445}, pages = {86}, language = {de} } @incollection{NarraAy, author = {Narra, Satyanarayana and Ay, Peter}, title = {Build-up granulation of lignin sludge's as innovative process improving its energy efficiency}, series = {Fuelling the future : advances in science \& technologies for every generation, transmission and storage}, booktitle = {Fuelling the future : advances in science \& technologies for every generation, transmission and storage}, editor = {Mendez-Vilas, A.}, publisher = {BrownWalker Press}, address = {Boca Faton, FL}, isbn = {978-1-61233-558-2}, pages = {9 -- 14}, language = {en} } @incollection{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Stollberg, Christian and Ay, Peter}, title = {Agricultural residues as a renewable source of bioenergy with special focus on cereal straws}, series = {Renewable resources and biotechnology for material applications}, booktitle = {Renewable resources and biotechnology for material applications}, editor = {Zaikov, Gennadij E. and Pudel, Frank and Spychalski, Grzegorz}, publisher = {Nova Publishers}, address = {Magdeburg}, isbn = {978-1-61209-521-9}, pages = {67 -- 79}, language = {en} } @incollection{Narra, author = {Narra, Satyanarayana}, title = {Bioenergy production: special emphasis on rice husks usage in India}, series = {Implementing Environmental and Resource Management}, booktitle = {Implementing Environmental and Resource Management}, editor = {Schmidt, Michael and Onyango, Vincent and Palekhov, Dmitry}, publisher = {Springer-Verlag}, address = {Berlin [u.a.]}, isbn = {978-3-540-77567-6}, pages = {15 -- 22}, language = {en} } @incollection{TukdeoNarra, author = {Tukdeo, Shrinivas and Narra, Satyanarayana}, title = {Wind Power Projects in India and Clean Development Mechanism (CDM) Approach}, series = {Implementing Environmental and Resource Management}, booktitle = {Implementing Environmental and Resource Management}, editor = {Schmidt, Michael and Onyango, Vincent and Palekhov, Dmitry}, publisher = {Springer-Verlag}, address = {Berlin [u.a.]}, isbn = {978-3-540-77567-6}, pages = {61 -- 68}, language = {en} } @phdthesis{Narra, author = {Narra, Satyanarayana}, title = {Processing and refinement of biogenous residues from agricultural, industrial and biotechnological processes}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus-29558}, language = {en} } @inproceedings{NarraLogschAy, author = {Narra, Satyanarayana and Logsch, Florian and Ay, Peter}, title = {Filtration resistance of the acid treated technical lignin granules and suspensions}, series = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, booktitle = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, pages = {206 -- 213}, language = {en} } @inproceedings{NarraGeldtGlaseretal., author = {Narra, Satyanarayana and Geldt, Elena and Glaser, Claudia and Ay, Peter}, title = {Technical realization of the innovative roll-agglomeration of bast fibres in industrial scale}, series = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, booktitle = {XXVII International Mineral Processing Congress, 20 - 24 October 2014, Chile, Santiago de Chile}, pages = {345 -- 355}, language = {en} } @misc{OyegbileAyNarra, author = {Oyegbile, Benjamin and Ay, Peter and Narra, Satyanarayana}, title = {Optimization of Physicochemical Process for Pre-treatment of Suspension by Flocculation Prior to Dewatering}, series = {Desalination and water treatment}, volume = {57}, journal = {Desalination and water treatment}, number = {6}, issn = {1944-3986}, doi = {10.1080/19443994.2015.1043591}, pages = {2726 -- 2736}, language = {en} } @inproceedings{NarraGruhnAy, author = {Narra, Satyanarayana and Gruhn, M. and Ay, Peter}, title = {Production of carbon fibres from technical lignin granules}, series = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, booktitle = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, publisher = {ETA-Florence Renewable Energies}, doi = {10.13140/RG.2.1.2139.0886}, language = {en} } @inproceedings{NarraAslanjanAy, author = {Narra, Satyanarayana and Aslanjan, Jana and Ay, Peter}, title = {Macroencapsulation of biogas residues increasing the fertilizer efficiency}, series = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, booktitle = {21st European Biomass Conference and Exhibition, Copenhagen, Denmark, 3 - 7 June 2013}, publisher = {ETA-Florence Renewable Energies}, doi = {10.13140/RG.2.1.3187.6642}, language = {en} } @inproceedings{NarraLogschGlaseretal., author = {Narra, Satyanarayana and Logsch, Florian and Glaser, Claudia and Ay, Peter}, title = {Sludge-pelleting of paper and pulp residues}, series = {XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, September 24 - 28, 2012}, booktitle = {XXVI International Mineral Processing Congress - IMPC 2012, New Delhi, India, September 24 - 28, 2012}, address = {New Dehli}, isbn = {81-901714-3-7}, pages = {03723 -- 03739}, language = {en} } @misc{AyNarraGlaser, author = {Ay, Peter and Narra, Satyanarayana and Glaser, Claudia}, title = {Vorrichtung zur Herstellung von Agglomeraten}, abstract = {Die Erfindung betrifft eine Rollagglomerations-Vorrichtung zur Herstellung von Agglomeraten aus einem Feststoff-F{\"u}ssigkeitsgemisch. Die Vorrichtung weist ein Transportmittel zum Transport eines Feststoff-Fl{\"u}ssigkeitsgemisches in Richtung der L{\"a}ngsachse des Transportmittles und ein Pressmittel auf, welches so zum Transportmittel beabstandet angeordnet ist, dass ein Pressmittel auf das auf der Auflagefl{\"a}che des Transportmittels befindlichen Feststoff-Fl{\"u}ssigkeitsgemisches einen Druck aus{\"u}ben kann, wobei das Transportmittle oder das Pressmittel quer zur L{\"a}ngsachse des Transportmittels bewegbar sind.}, language = {de} } @misc{NarraGlaserAy, author = {Narra, Satyanarayana and Glaser, Claudia and Ay, Peter}, title = {Verfahren zur Herstellung von Langzeitd{\"u}nger aus G{\"a}rresten mittels Verkapselung}, abstract = {Die Erfindung betrifft ein Verfahren zur Herstellung von D{\"u}nger aus G{\"a}rresten, wobei die Inhaltsstoffe aus den enthaltenen Zubereitungen lang anhaltend freigesetzt werden.}, language = {de} } @misc{NarraGlaserAyetal., author = {Narra, Satyanarayana and Glaser, Claudia and Ay, Peter and Logsch, Florian}, title = {Verfahren zur Herstellung von wasserunl{\"o}slichen Lignin-Agglomeraten}, abstract = {Die Erfindung betrifft ein Verfahren zur Herstellung von wasserunl{\"o}slichen Agglomeraten aus Ablauge eines Cellulosegewinnungsprozesses. Erfindungsgem{\"a}ß umfasst das Verfahren die folgenden Schritte: 1. Durchf{\"u}hrung einer Granulation mit der Ablauge zur Erzeugung von Lignin-Agglomeraten und 2. Behandeln der erzeugten Lignin-Agglomerate mit einer S{\"a}ure.}, language = {de} } @inproceedings{NarraGlaserBrinkeretal., author = {Narra, Satyanarayana and Glaser, Claudia and Brinker, Mona and Bednarek, R. and Gusovius, Hans-J{\"o}rg and Ay, Peter}, title = {Vergleich verschiedener Bildanalysesysteme zur Bestimmung der Partikelgr{\"o}ßenverteilung von zerkleinertem Stroh und deren charakteristischer Einfluss auf Stabilit{\"a}t und Festigkeit von Biomassepellets}, series = {Aufbereitung und Recycling, 10. und 11. November 2010, Freiberg, Jahrestagung der UVR e.V. und FIA e.v.}, booktitle = {Aufbereitung und Recycling, 10. und 11. November 2010, Freiberg, Jahrestagung der UVR e.V. und FIA e.v.}, address = {Freiberg}, pages = {S. 35}, language = {de} } @misc{NarraBhandariGlaseretal., author = {Narra, Satyanarayana and Bhandari, Prem and Glaser, Claudia and Bischof, Heike and Busch, G{\"u}nter}, title = {Pelletisation of biogas residues with pelleting disks}, series = {19th European Biomass Conference and Exhibition, ICC Berlin, International Congress Center Berlin, Germany, conference 6 - 10 June 2011, exhibition 6 - 9 June 2011, proceedings}, journal = {19th European Biomass Conference and Exhibition, ICC Berlin, International Congress Center Berlin, Germany, conference 6 - 10 June 2011, exhibition 6 - 9 June 2011, proceedings}, publisher = {ETA-Florence Renewable Energies}, address = {Florence}, language = {en} } @misc{AyNarraGlaser, author = {Ay, Peter and Narra, Satyanarayana and Glaser, Claudia}, title = {System zur Rollagglomeration mit integrierter Entw{\"a}sserung}, language = {de} } @inproceedings{NarraGlaserGusoviusetal., author = {Narra, Satyanarayana and Glaser, Claudia and Gusovius, Hans-J{\"o}rg and Stollberg, Christian and Ay, Peter}, title = {Agricultural residues as a renewable source of bio-Energy with special focus on cereal straws}, series = {Renewable resources and biotechnology for material applications, proceeding of the 16th International Conference for Renewable Resources and Plant Biotechnology (NAROSSA 2010), held in Magdeburg, Germany, June 7 - 8, 2010}, booktitle = {Renewable resources and biotechnology for material applications, proceeding of the 16th International Conference for Renewable Resources and Plant Biotechnology (NAROSSA 2010), held in Magdeburg, Germany, June 7 - 8, 2010}, editor = {Zaikov, Gennadij E.}, publisher = {Nova Science Publ.}, address = {New York}, isbn = {978-1-61209-521-9}, pages = {67 -- 80}, language = {en} } @inproceedings{NarraGoettlingAy, author = {Narra, Satyanarayana and G{\"o}ttling, Sandra and Ay, Peter}, title = {Agglomeration of Lignin slugde as a technological innovative conversion for producing energy}, series = {Extended abstracts, 1st International Conference on Materials for Energy, July 4 - 8, 2010, Convention Center Karlsruhe/Germany}, booktitle = {Extended abstracts, 1st International Conference on Materials for Energy, July 4 - 8, 2010, Convention Center Karlsruhe/Germany}, publisher = {DECHEMA}, address = {Frankfurt, M.}, isbn = {978-3-89746-117-8}, language = {en} } @misc{OyegbileAyNarra, author = {Oyegbile, Benjamin and Ay, Peter and Narra, Satyanarayana}, title = {Optimisation of micro-processes for shear-assisted solid-liquid separation in a rotatory batch flow vortex reactor}, series = {Journal of Water Reuse and Desalination}, volume = {6}, journal = {Journal of Water Reuse and Desalination}, number = {1}, doi = {10.2166/wrd.2015.057}, pages = {125 -- 136}, abstract = {This paper reports the study of micro-processes in a novel pre-treatment technique using a pellet forming batch flow vortex reactor of cylindrical shape that consists of axially revolving rotor plates between fixed stator plates. The suspension was first mixed with high molecular weight synthetic polymers by stirring for approximately 50 seconds and then agitated for 20 minutes. The process was optimised for a number of operating conditions including polymer type and dosing regimen, rotation speed, wall-plate gap distance, residence time and suspension filling method. The results of the investigation show that optimising a number of process variables that influence floc formation and growth, along with specific apparatus construction and geometry, help to maintain the suspension in a metastable state that is crucial for the formation of pellet-like compact agglomerates with better dewaterability and uniform aggregate size. A maximum dry solids content of 28.3\% after gravity dewatering through a 0.5 mm sieve was recorded during the investigation, with a maximum particle removal efficiency of 97.5\%.}, language = {en} } @inproceedings{AyGlaserLogschetal., author = {Ay, Peter and Glaser, Claudia and Logsch, Florian and Narra, Satyanarayana and Gemende, Bernhard and Gerbeth, Anja and Riedel, Tobias and Pausch, Nicole and Leiker, Matthias and B{\"a}de, Bianka and Heiduschke, Rene}, title = {Micro-structured Iron (III) hydroxide agglomerates with high porosity as adsorbents}, series = {Proceedings of the XXVIII International Mineral Processing Congress (IMPC 2016), September 11-15, 2016, Qu{\´e}bec City, Canadian Institute of Mining, Metallurgy and Petroleum}, booktitle = {Proceedings of the XXVIII International Mineral Processing Congress (IMPC 2016), September 11-15, 2016, Qu{\´e}bec City, Canadian Institute of Mining, Metallurgy and Petroleum}, isbn = {978-1-926872-29-2}, pages = {Paper 263}, abstract = {This study focusses on the production of micro-structured agglomerates with high porosity from iron (III)-hydroxide-containing materials as adsorbent. A fractal structure of the agglomerates was created through a two-stage agglomeration process. Developing porous structures was necessary to increase the adsorption capacity. Various materials were used for the agglomeration experiments: i) filter cake (dry matter content 23 to 27 wt.-\%); ii) FerroSorp®DGμ, a product which is already being used commercially for various applications in water cleaning. These materials in the pristine state have different characteristics such as dry matter content and particle size distribution. The desired optimised agglomerates can be achieved with the help of additives or binders, respectively. Additionally, the agglomeration process parameters play a vital role. In order to produce agglomerates with high porosity, the process was carried out in two steps. Firstly, FerroSorp®DGμ (d90 < 30 µm) was agglomerated jointly with the aforementioned filter cake in an Eirich intensive mixer (particle size range 125 µm < d90 < 500 µm). The second agglomeration step post drying was carried out in a pelletisation disc or in an Eirich intensive mixer with the addition of polymeric binders (up to particle sizes ranging from 2 to 4 mm). Agglomerates were characterised both in short and long term loading tests using phosphate as model ion. Contact times were less than 10 min, similar to practical application in percolation columns, or more than 7 days, respectively. The results show that the agglomerates produced in the two-stage pelletisation process have more advantageous properties like better accessibility of the active sites obtained by specificly influencing the particle size distribution during the two-stage pelletisation process.}, language = {en} } @incollection{StockBensHelbachetal., author = {Stock, Oliver and Bens, Oliver and Helbach, Christoph and Narra, Satyanarayana and Downes, Nigel K. and H{\"u}ttl, Reinhard F. and Raab, Thomas}, title = {Bodenphysikalische, wachstumskundliche und rechtliche Aspekte der Melioration stark toniger Kippsubstrate mit REA-Gips}, series = {Neue Ans{\"a}tze in der land- und forstwirtschaftlichen Rekultivierung}, booktitle = {Neue Ans{\"a}tze in der land- und forstwirtschaftlichen Rekultivierung}, editor = {H{\"u}ttl, Reinhard F. and Schneider, Bernd Uwe}, publisher = {BTU}, address = {Cottbus}, isbn = {978-3-937728-06-3}, pages = {45 -- 77}, language = {de} } @phdthesis{Narra, author = {Narra, Satyanarayana}, title = {Structural amelioration of clay-sand substrate using FGD Gypsum as a substitute for Lime in recultivation of virgin soil at post-mining field Nochten (Lusatia) under soil physical and plant growth aspects}, publisher = {BTU}, address = {Cottbus}, isbn = {3-937728-11-2}, pages = {XVII, 143}, language = {en} }